We analyzed this package on Mar 6, 2019, and provided a score, details, and suggestions below.
Analysis was completed with status completed using:

Dart: 2.2.0

pana: 0.12.14

Flutter: 1.3.3

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Health issues and suggestions

Document public APIs. (-1 points)

4 out of 4 API elements have no dartdoc comment.Providing good documentation for libraries, classes, functions, and other API elements improves code readability and helps developers find and use your API.

Format lib/gplacespicker.dart.

Run flutter format to format lib/gplacespicker.dart.

Maintenance suggestions

The package description is too short. (-20 points)

Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.

Package is pre-v0.1 release. (-10 points)

While nothing is inherently wrong with versions of 0.0.*, it might mean that the author is still experimenting with the general direction of the API.